SALIUS.— POMPILUS. 185 



Deep black ; the head and thorax opaque, velvety ; the abdomen shining, the apical 

 segments slightly pruinose ; pygidium rough, thickly covered with long black hairs. 

 Clypeus slightly incised in the middle. Head and thorax bearing long black hair ; 

 coxae and femora sparsely covered with long hair. 



S. panamensis agrees with S. vercepacis in having fuliginous wings ; but it is dark 

 metallic green, the apical half of the antennae only is fulvous, the wings are white at 

 the apex, and the first recurrent nervure is not interstitial. 



POMPILUS. 



Pompilus, Fabricius, Ent. Syst., Suppl. p. 246 (1798) ; Kohl, Verh. zool.-bot. Ges. Wien, xxxiv. 

 p. 51. 



I agree with Kohl in treating Planiceps, Ferreola, &c. as mere sections of Pompilus. 



Head flat, the antennae short and inserted immediately over the clypeus, the thorax 

 elongated, the fore tibiae dilated and flattened, the fore wings with only two cubital 

 cellules. — Planiceps, Latr. (Species 1-3.) 



v 1. Pompilus (Planiceps) pulchritarsis. 



Niger vel cseruleus ; alis fuliginosis. 

 Long. 16 millim. 



Hab. Mexico, Chilpancingo in Guerrero 4600 feet [Champion). 



Head opaque, shagreened, sparsely covered with black hairs; the cheeks with a 

 whitish pubescence ; eyes converging beneath ; the ocelli almost in a triangle, the 

 hinder ones separated from each other by, if anything, a greater distance than they are 

 from the eyes ; clypeus rounded at the apex. Thorax opaque, alutaceous ; the pleurae 

 more shining ; the pronotum quadrate, more than twice longer than the head. The 

 scutellum is distinctly narrowed from the base to the apex. The median segment is as long 

 as the mesothorax ; the apex rounded above and with an oblique slope. Abdomen shorter 

 than the thorax, the apex with longish hairs ; the pygidium smooth. The first recur- 

 rent nervure is received a little beyond the middle of the cellule, the second beyond 

 the second transverse cubital nervure ; the first transverse cubital nervure curved, the 

 second straighter and semi-oblique. Legs longish ; the fore tibiae thickened and 

 dilated; the fore tarsi slightly incised at the base, ciliated, without comb-spines; the 

 tibiae sparsely spined ; the tarsi thickly covered with short spines ; the long spur of 

 the hind tibiae does not reach the middle of the metatarsus. 



We have also received a Pompilus from North Yucatan (Gaumer), 9 millim. in 

 length, which only differs from the type of P. pulchritarsis, so far as I can make out, 

 apart from size, in having the fore tibiae more rounded and not so much flattened. 



biol. cente.-amee. Hymenopt., Vol. II., August 1893. 2 bb 



